LCST POLYMERS

摘要

Disclosed are polymers of general formula (I), wherein R1 (identically or differently) represents hydrogen or a methyl group, X1 and X2 = -O-, -S-, or -NH-, X1 additionally representing a single bond if the first atom in R2 is not a C atom, and R2 represents one of the following radicals: a) a copolymer radical (Cop) containing at least two structural units -(-O-C2H4)n- (ethylene oxide = EO) and -(-O-C3H6-)n- (propylene oxide = PO), or -(-O-C4H8)n- (butylene oxide = BuO) and -(-O-CH2-)n- (methylene oxide = MeO) at a molar ratio of 5 to 95:95 to 5, n representing approximately 1 to 1000 (identically or differently for each structural unit); b) formula (II), wherein Cop represents a copolymer radical as defined in (a), x = 1 to 5, and y = 1 to 20; c) formula (III), wherein R represents an alkyl group, r = (identically or differently) 1 to 1000, and s = 1 to 500; d) formula (IV), wherein o = 10 to 4000 and R3 (identically or differently) represents hydrogen or alkyl groups comprising 1 to 5 carbon atoms; e) formula (V), wherein p = 5 to 2000; or formula (VI), wherein q = 10 to 4000. Also disclosed are methods for the production thereof and the use thereof for coating particles and non-particulate substrate surfaces.